Can you please tell me which fractal shape you want to design in HFSS?

Any type sir , actually I don't understand how to make fractal antenna in hfss

For example, if you want to design Sierpinski Gasket type of shape, you first design a patch. Then subtract a rectangle having 1/3 rd dimensions from the center. Again you subtract squares of the same reduced dimensions around the rectangle located in center and so on.

Thanks sir actually I want any hfss file of fractal antenna design.because there is no tutorial available .even in YouTube only a single video of Koch fractal antenna is available that is also cut from a point.

You can refer any paper and find dimensions from them. Rest of the procedure is simple if you know HFSS well.

Hello sir if you have any design of fractal antenna using HFSS, then send me please,my email id is [email protected].

I sent an HFSS file which may be useful to you for constructing the structure.

What kind of help?

Iteration of fractal shape does not transferred directly to a radiation pattern, therefore it should take care for the smallest radiation element then growth the band of operation according to the scaling factor of geometry.

I think the perfect start can be through following this example which shows you how to design a dipole antenna using HFSS by step-step You will find it starting from slide 51

So try to follow it and replicate the same results they obtained. Also, another example is here for horn antenna Once you did both, you will be sure that you can use the program correctly then the other antennas will be similar

Check the design attached here. I used MATLAB to find out the positions of each curve